Set of key buttons for a handset



FIG. 1 is a front view of a first embodiment of a set of key buttons fora handset showing our new design;

FIG. 2 is a perspective front view thereof;

FIG. 3 is a front view of a second embodiment of a set of key buttonsfor a handset showing our new design; and,

FIG. 4 is a perspective front view thereof.

The broken line showing the remainder of the handset is for illustrativepurposes only and forms no part of the claimed design.

The ornamental design for a set of key buttons for a handset, as shownand described.